HISPANIOLAN AND BAHAMAN ANNULARIIDAE 245 



U.S.N.M. No. 391408 contains 74 topotypes from the same source. 

 U.S.N.M. No. 390338 contains 9 specimens collected by Bartsch at 

 Maroon Hill. 



COIiONINA 1NAGUEL,L.A, new species 



Plate 38, Figure 13 



Shell rather large, elongate-ovate, white. Nuclear whorls about 2, 

 well rounded, smooth. Postnuclear whorls inflated, well rounded, and 

 marked by strong, elevated, spiral keels, of which eight are present on 

 the first two whorls and intercalated cords between these on the last 

 turn. The axial sculpture consists of exceedingly fine, very closely spaced, 

 slightly retractively curved, sublamellar riblets, which render the spiral 

 cords serrulate. These axial riblets are about as wide as the spaces that 

 separate them. The axial riblets render the summit denticulate. The sum- 

 mit of the whorl is almost appressed to the preceding turn. Suture 

 strongly constricted. Periphery well rounded. Base moderately long, 

 marked by 10 spiral cords, less strong than the keels on the spire. The 

 moderately broad open umbilicus also bears spiral cords. The last whorl 

 is solute for about one-tenth of a turn. Aperture oval, slightly auriculated 

 at the posterior angle; peristome double, the outer moderately broadly 

 expanded, more so on the inner lip, which is reflected to partly cover 

 the umbilicus ; it is least expanded on the parietal wall. Operculum typi- 

 cally coloninid. 



The type (U.S.N.M. No. 536838) I collected between the hill and 

 west shore at the south end of Little Inagua. It has 3.3 whorls remain- 

 ing and measures: Length, 15.9 mm.; greater diameter, 10.6 mm.; lesser 

 diameter, 8.8 mm. 



U.S.N.M. No. 392361 contains 6 topotypes from the same source. 



U.S.N.M. No. 390278 contains 12 specimens which I collected north 

 of South Point on the west side of Little Inagua. 



This species differs from typical Colonina hryanti, which it re- 

 sembles in size and sculpture, chiefly by the fact that the suture is not 

 profoundly channeled. 



COI.ONINA FORTUNENSIS, new species 



Plate 38, Figure 11 



1901. Ctenopoma hydii Henderson, Nautilus, vol. IS, p. 86, pi. 5, fig. 5. (Not 

 Weinland.) 



Shell elongate-conic, rather large, varying from soiled white to wood 

 brown. Nuclear whorls 2, smooth, strongly rounded, forming a slightly 

 mammillated apex. Postnuclear whorls well rounded, narrowly shoul- 

 dered at the summit, marked by almost sublamellar, strong, spiral cords, 

 of which six are present between the summit and the periphery, on all 

 but the last whorl, on which there is a lesser intercalated cord between 

 the first and second. The summit itself is slightly swollen to resemble 



